I'm setting up a DC battery bank
I have 6 X 170ah 12v AGM powersafe batteries
A Victron skylla 50amp/24v battery charger. And a 24v inverter that I'm yet to wire in
I wired 3 sets of 2 batteries together in series to make 24v, then I linked each series of batteries together in parallel to two big bus bars (equal length cables). I used 35mm2 cable. The battery charger is also connected to the bus bar
forgive my (not so) technical drawing
I have set the battery charger to the correct voltage listed in the battery manufacturers data sheet (28v float at current temps).
The problem is the batteries don't seem to be charging equally. When I turn the charger on, the first battery in each series reads 14.5v, the second reads 13.5v.
Have I done something wrong? I did a lot of research before starting this project, but apparently not enough.
All help appreciated thank you